. >>> president obama has invited congressional leaders from both parties to the white house today for a summit on the nation's looming fiscal cliff. $500 billion in tax hikes along with deep spending cuts are set to kick in january 1st if they've don't reach a deal. both side say they're willing to look for compromises. the markets of course have been very jittery worried there will not be a resolution by that deadline in just a few weeks. less than 50 days now. >>> overseas now a question who blinks first in the increasingly violent conflict between israel and the palestinians. >> israeli officials warn they're ready for a ground invasion if hamas does not stop firing missiles into the country. fighting between the two side escalated sharply yesterday. with a first-ever militant attack on the tel aviv area. we'll of course have much more on the growing tension coming up later in this half-hour of the show. >>> federal investigators are heading to the scene of a tragic accident in texas. where a freight train slammed into a parade float carrying wounded veterans. four people were kill